Hand printer



NOV. 6, 1934. ANDERSON 1,979,927

HAND PRINTER 3 Sheets-Sheet 1 Filed July 30, 1932 gill/! IIIIII'IIIIIIIIII'IIIIIIIIIII1 1 a I I Nov. 6, 1934. E, ANDERSON 1,979,927

HAND PRINTER Filed July 30, 1932 I 3 Sheets-Sheet 2 if if .45 .4? J7 ii 5 TEA i 63 TTQHNEYE'.

E. ANDERSON 1,979,927

HAND PRINTER Nov. 6, 1934.-

3 Sheets-Sheet Z5 Filed July 50, 1932 E QN EEEUN W Patented Nov. 6, 1934 PATEN E HAND PRINTER- Edwin Anderson, Les Angele s, Calif., assignor to Francis Hahn, l'cos Angeles, Calif.

Application any 3t), 1932, Serial No. 626,716

4 Claims.

My invention relates to a cylindrical type of hand operated printer in which the lines of type are placed in a revoluble cylinder and on rotation of this cylinder a printed sheet may be obtained.

My invention relates to a type of cylindrical printer in which the cylinder is provided with grooves extending longitudinally on its periphery, and in these grooves lines of type may be inserted or removed from such grooves. These lines of type are pre-setups and the machine is usually used for printing restaurant and cafe menus in which it may be desired to change the menu at least every day and sometimes for every meal.

In this type of printer, one of the objects and features of my invention is the manner of clamping the lines of type in the cylinder, this being by means of a ring with radial spokes which may be moved lengthwise of the cylinder and press the individual lines of type in the grooves. The opposite end of the cylinder is somewhat slightly undercut, forming an outwardly contracting taper, which prevents the type from being forced radially outwardly.

Another object and feature of my invention relate to the operation of the inking rolls, with a positive lock connected with such rolls to prevent reverse rotation of the printing cylinder. The inking roll is mounted in a fixed position on fixed arms and a transfer roll is suspended on a pair of swinging arms. These swinging arms are controlled by a cam on the cylinder, such cam hav- "ing a shoulder which engages an operating lever for the transfer roller. This prevents a back rotation of the printing cylinder.

Another feature of my invention is that the printing portion of thecylinder is at a slightly greater radius from the center than the remaining portion so that when the cylinder is brought to rest the transfer roller is out of engagement with the type.

Another feature of myinvention relates to the paper feed. In this a feeding roller engages the underside of the paper and cooperates withthe feeding flanges on the printing cyli'nder. When the cylinder is brought to rest, there is a clear space for inserting paper or cardboard between the feeding roller and the cylinder. Therefore, the paper is inserted to the desired extent so that on rotation of the cylinder the first line will come at the proper position on the paper. The printing cylinder and feeding roller will then automatically feed the paper.

Another detailed feature of my invention re- 'lates to an inking plate underneath the paper (c1. llll-377) supporting table which may be coated with printers ink, and the ink on the inking roller thereby replenished.

. My invention, furthermore, is mounted on a cabinet structure having a drawer in which lines 6; of type maybe stored for use in the cylinder.

My invention is illustrated in the accompany ing drawings, inwhich:

Fig. 1 is a longitudinal section through the machine taken substantially on the line 1--l of 2 or 4 in thedirection of the arrows.

Fig. 2 is a vertical transverse section on the irregular line 22 of Fig. l in the direction'of the arrows.

Fig. 3 is a vertical transverse section on the 79 line 3--3 of Fig. 1 in the direction of the arrows. Fig. l is a partial plan takenon'the line 4--4 of Fig.2 in the direction of the arrows.

- Fig. 5 is a partial vertical longitudinal section on the line 5-5 of Fig. 2 in the direction of the arrows.

Fig. 6 is a partial vertical longitudinal section on the line 6-6 of Fig. 4 in the direction of the arrows.

. In my invention I utilize a cabinet type of structure 11, which has a front wall 12 and a back wall 13. These walls have a raised section l i toward the end. A bearing 15 is on the back wall, a bearing 15 on the front wall. The mounting of the printing cylinder is as follows:

Through these hubs there extends a cylinder shaft 16. To the front end of the shaft there is connected the crank 1'7 with the crank handle 18. A shaft retainer 19 comprises a notched platefitting in a groove 20 in the shaft and being secured to the hub by a screw 21. On the rear end of the shaft there is a disk 22 illustrated as keyed at 23, which ,disk has a flange 24. At the front end of the shaft there is a bushing 25 which has a knurled finger grip 26, which bushing is threaded at its inner end as illustrated at 27. The bushing is journaled in the bearing 15. A front disk 28 having a hub 29 is rotatable on the bushing 25. This has a flange 30, which flange is provided with a series of cutout sections 31. The actual printing cylinder 32 is mounted on the flanges 24 and 30. The cylinder is provided with a plurality of longitudinal grooves 33, these grooves having parallel sides and being substantially radial, and they extend from the open front side 34. of the cylinder to the flange 35 at the back. The flange has a slightly undercut section 36 with an outward taper 37 toward the front end of the grooves.

The rows of type are indicated at 38. These are formed with tongues 39 which extend in the grooves with longitudinal bars 40 to cause one row of type to fit closely against the next, and on these bars are the set up individual letters or numerals 41. The manner of holding the rows of type bars in place is as follows, having reference particularly to Figs. 2 and 5:

A pressing ring 42 has a ring section 43 with a rubber annular ring 44 fitted therein in a groove. This ring has a series of spokes 45 terminating in the central hub 46. This hub has internal threads 47 threaded on the threaded portion 27 of the bushing 25. The spokes extend through the slotted or cutout section 31 of the flange 30 of the front end disk 28. A series of compression springs 48 are wound around guide pins 49, these guide pins being threaded in sockets 50 in the disk 28 and extending through perforations in the hub 46 of the pressure disk 42. These springs normally tend to press the ring 42 with its rubber ring 44 against the end of the type bars, thus holding these pressed against the undercut section 36 of the taper 37 and preventing these from moving outwardly.

When it is desired to remove type bars and to insert others, the finger grip knurled head 26 of the bushing 25 is rotated in such a manner as to thread the ring 42 toward the front end of the shaft 16. This compresses the springs 48 and frees the front end of the type bars so that they may readily be removed in a radial direction from the grooves and new type bars re-inserted if desired. This arrangement enables the type to be reset for different articles to be printed. l

The inking arrangement is as follows, having reference particularly to Figs. 1, 5, and 6:

A fixed shaft 51 is connected between the opposite sides 12 and 13 of the cabinet and pivoted to this fixed shaft there are a first pair of brackets 52, each of these brackets having a notch 53 in which is mounted the shaft 54 of the inking roller 55. The shaft has projecting ends 56 to permit the inking roller to be readily removed from these brackets. Rotatably mounted on the shaft 51 there are a pair of secondary movable brackets 57, each of which has a notch 58, and in these notches there is mounted the axle 59 of the transfer ink roller 60. This transfer ink roller is urged toward the type cylinder by means of a coiled spring 61 which is coiled around the opposite ends of the shaft 51. One end 62 of this spring is attached as indicated at 63 to a pin on the side of the cabinet. The opposite end 64 engages a pin 65 on one of the arms 57. This action of these two springs tends to move the brackets 57 inwardly toward the printing cylinder and thus carry the transfer ink roller. Integral with the bracket 52 are pawls 66 which bear on the surface 66 and ride over the cams 6'7 on the flange 24 of the disk 22 and flange 30 of the end disk 28. A stop pin 68 on each of the brackets 57 respectively limits the movement of the pawl and also of the brackets. The pawl is adapted to engage behind a shoulder 69 at the end of the cam 67 and prevents reverse rotation of the printing cylinder.

The paper feed utilizes a paper feeding table '70 forming the top of the cabinet structure between the sides 12 and 13. This is, preferably, formed by a metal plate terminating at one end at 71, and at the opposite end at '72, partly underneath the printing roller. A pair of guide angles 73 guide the paper at the margins. These guide angles may have graduation or scale marks to indicate the proper locating of the paper. The paper feed roller '74 has an axle 75 which is mounted in a notch '76 in a pair of pivoted journal brackets 77, these each being pivoted at '78 on pins extending outwardly from the side of the sides 12 and 13 of the cabinet. The outer portions of these brackets are slotted and through these slots extend vertical pins '79 threaded in fixed brackets on the sides 12 and 13 of the cabinet. These pins have a head 81 which engages the bracket '77 when these are in their uppermost position and thus limits the upward movement of the feed roller toward the printing cylinder. A compression spring 82 coiled on each pin is pressed upwardly underneath each bracket 77 by means of a nut 83 adjustable on each pin. Thus the paper feed roller may be depressed by compressing the springs 82. The flange 35 of the cylinder and the rim 43 have a notched-out section 84 forming a peripheral portion 85 of lesser diameter than the main circumference portion 86 of this flange or the ring, these being of equal outside diameter. This notched-out section gives a clearance from the paper feeding roller.

The manner of feeding the paper, and the printing, is as follows:

The printing cylinder is brought to rest, for instance, in the position shown in Fig. 1, in which there is a. clearance between the periphery of this cylinder and paper feed roller 74. This allows paper or cardboard, for instance, for a menu, to be inserted between the cylinder and paper fee-d roller to a desired extent to bring the title or top line of the printed matter at the correct distance from the top of the paper. The printing cylinder can only be rotated in one direction, and as soon as the peripheral sections 86 of the ring 43 and flange 35 engage the paper feeding cylinder, this latter cylinder is rotated and feeds the paper. An additional accurate feed is obtained when the type presses on the top of the paper and the paper feeding roller on the bottom.

When the printing cylinder is stationary, the

spring 61 shifts the transfer roller 60 away from 1 the inking roller 55. However, as soon as the type engages the transfer roller, it is pressed outwardly and brought into contact with the inking roller. The inking roller transfers the ink from its surface to the transfer roller and from the transfer roller it is transferred to the type bars of the printing cylinder. One rotation of the crank is sumcient to print a strip of paper or cardboard and brings the cylinder again to rest in the position of Fig. 1.

In order to re-ink the cylinder, an inking plate 87 is mounted in guides 88 below the top plate 70. This has a finger grip end 89, allowing it to be drawn outwardly, and on this inking plate the printers ink is spread, so that by lifting the inking roller on its axle off its brackets, it may be rolled over the ink on the inking plate, thus having its surface recoated with printers ink.

A drawer 90 fits in the cabinet, sliding on bottom guides 91 between the sides 12 and 13. This is illustratedas formed of a block of wood 92 with a series of vertical sockets 93 in which type bars may be placed. A knob 94 on the front of the door allows it to be moved. A cover plate 95 is.

space of the cabinet adjacent the paper feeding roller.

In order to indicate stopping of the printing cylinder at the end of each rotation, I use a stop device 97. This employs a socket structure 98 preferably formed in the bearing 15 section of the side wall 13. In this socket there is a slidable pin 99.with a shoulder 100 and urged by a spring 101 bearing on the shoulder,and a closure plug 102, this spring forces the end of the stem into engagement with the recess 103 on the disk 22. Therefore, on each rotation of the cylinder the pin 99 being forced into the recess 103 brings the device to rest.

The brackets 52 supporting the inking roller 55 are substantially stationary while a print is being made, as the brackets 52 and the pawls 66 are formed integral and, hence, pivoted, and the pawl rides on the cylindrical section 66' of the flanges 24 and 30. Immediately after printing is finished, the pawl engages the cam 67, riding over this, which action swings the pawl with the bracket 52, disengaging the printing roller from the transfer roller. The pawl immediately drops on the section 66' to engage the shoulder 69, as above mentioned, to prevent reversal of direction in the printing cylinder, but in this position there is no type to engage the transfer roller and it is forced out of contact with the printing roller by means of the spring 61. It is to be noted by this construction, however, that during the operation the inking roller rotates on a fixed axis.

Various changes may be made in the details of construction without departing from the scope of the invention as defined by the appended claims.

I claim:

1. In a hand printer, a rotatable printing cylinder mounted on a shaft, said cylinder having longitudinal grooves open at one end and having a closure flange at the opposite end, said flange being undercut, a pressure ring mounted on the shaft to rotate with the cylinder, and means to move said ring longitudinally of the cylinder to exert a pressure on the ends of the type bars in the grooves to press said bars against the undercut portion of the flange, the means to move the pressure ring comprising a bushing on the shaft, the ring having a hub threaded on the bushing, and a finger grip head to rotate the bushing.

2. In a hand printer having a printing cylinder with longitudinally extending grooves open at one end and having an undercut closure flange at the opposite end, the cylinder having disks at its opposite ends, said disks being mounted on a rotatable shaft journalled in bearings and at least one disk secured to the shaft to rotate the cylinder, a pressure ring having a hub with radial spokes the hub encircling the shaft, means to rotate the shaft, and an operating means independent of the shaft rotation to move the pressure ring longitudinally of the shaft to exert a pressure against type bars mounted in the grooves.

3. In a hand printer as claimed in claim 2, the means to move the pressure ring comprising a bushing mounted on the shaft and supported in one of the bearings, one of the disks of the cylinder being mounted on the bushing, the pressure ring being threaded on the bushing, the bushing having a finger grip end to rotate said bushing and hence move the ring longitudinally of such bushing and shaft.

4. In a hand printer having a cabinet structure with a pair of side walls, each side wall having a bearing, a rotatable shaft mounted in one bearing, a bushing in the other bearing through which the shaft extends, a cylinder having a plurality of longitudinal grooves in its periphery, one end of the grooves being closed by an undercut flange having an outward slope toward the opposite open ends of the grooves, a disk connected to each end of the cylinder by a flange, one of the disks being keyed to the shaft and the other disk being mounted on the bushing, said latter disk having cutout sections, a pressure ring with spokes extending through said cutout sections, said pressure ring having a hub at the inner end of the spokes, the hub being threaded on the bushing, said bushing having a finger grip head, a crank on the shaft to rotate same, the pressure ring having a pressure pad to bear against the ends of the type bars in the grooves.

EDWIN ANDERSON. 

